Facile synthesis of porous LiMn2O4 micro-/nano-hollow spheres with extremely excellent cycle stability as cathode of lithium-ion batteries
- 139 Downloads
In present work, the porous LiMn2O4 micro-/nano-hollow spheres are directly prepared from the globe precursor MnCO3 obtained via a facile precipitation route without any intermediate and ethanol. X-ray diffraction and scanning electron microscopy results indicate that the as-synthesized porous LiMn2O4 micro-/nano-hollow spheres are composed of nanometer-sized primary particles. Charge–discharge tests, cyclic voltammetry, and electrochemical impedance spectra show that the obtained LiMn2O4 delivered higher reversible capacity, extremely excellent cycle stability, superior kinetic properties, and rate capacities. Specially, there are nearly no any capacity loss after 200 cycles, and the coulombic efficient is nearly close to 100%, which are attributed the unique porous micro-/nano-hollow structure and a better crystallinity.
KeywordsLithium-ion batteries LiMn2O4 Micro-/nano-structure Precipitation Lithium storage performances
- 4.Hariprasad K, Naresh N, Nageswara RB, Venkateswarlu M, Satyanarayan N (2016) Preparation of LiMn2O4 nanorods and nanoparticles for lithium-ion battery applications, Mater. Today 3: 4040–4045Google Scholar
- 7.Wu Y, Zhang J, Cao C, Khalid S, Zhao Q, Wang R, Butt FK (2017) LiNi0.5Mn1.5O4 nano-submicro cubes as high-performance 5 V cathode materials for lithium-ion batteries, Electrochim Acta 230: 293–298Google Scholar
- 19.Hwang B-M, Kim S-J, Lee Y-W, Han B, Kim S-B, Kim W-S, Park K-W (2013) Mesoporous spinel LiMn2O4 nanomaterial as a cathode for high-performance lithium ion batteries. Int J Electrochem Sci 8:9449–9458Google Scholar